It's a potato.
Potatoes have a very high ratio of crop yield vs. amount of land cultivated, making them an excellent crop for smallholders or urban farmers. They are also highly nutritious; a steady diet of potatoes, supplemented by small amounts of milk and butter, will fulfill all human dietary needs (though most people will crave more variety). They are fairly easy to replant and keep well in storage.
In a pinch, a potato can be used as a projectile. Thrown potatoes will be little more than an annoyance, but when fired from a "spud gun" or sling they may do actual damage.
Potatoes have a very high ratio of crop yield vs. amount of land cultivated, making them an excellent crop for smallholders or urban farmers. They are also highly nutritious; a steady diet of potatoes, supplemented by small amounts of milk and butter, will fulfill all human dietary needs (though most people will crave more variety). They are fairly easy to replant and keep well in storage.
In a pinch, a potato can be used as a projectile. Thrown potatoes will be little more than an annoyance, but when fired from a "spud gun" or sling they may do actual damage.